ext4: use pagevec_lookup_range() in writeback code

[linux-2.6-block.git] / mm / madvise.c

diff --git a/mm/madvise.c b/mm/madvise.c
index 47d8d8a25eae49604f81bcffe40e45ef9b8e4c6c..4d7d1e5ddba9d9b26583b6ca9f05774247d9b1d8 100644 (file)
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -368,8 +368,8 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr,
                                pte_offset_map_lock(mm, pmd, addr, &ptl);
                                goto out;
                        }
-                       put_page(page);
                        unlock_page(page);
+                       put_page(page);
                        pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
                        pte--;
                        addr -= PAGE_SIZE;
@@ -613,6 +613,7 @@ static int madvise_inject_error(int behavior,
                unsigned long start, unsigned long end)
 {
        struct page *page;
+       struct zone *zone;
 
        if (!capable(CAP_SYS_ADMIN))
                return -EPERM;
@@ -646,6 +647,11 @@ static int madvise_inject_error(int behavior,
                if (ret)
                        return ret;
        }
+
+       /* Ensure that all poisoned pages are removed from per-cpu lists */
+       for_each_populated_zone(zone)
+               drain_all_pages(zone);
+
        return 0;
 }
 #endif